15 August 2026
Europe

US Senate rejects resolution to end war with Iran

The United States Senate has rejected a resolution that would have required the administration to cease military operations against Iran. The document stalled at 47 votes in favor, against 52 opposed, marking its defeat.

The vote saw two significant exceptions to party lines: Republican Senator Rand Paul of Kentucky was the only member of his party to support the resolution, while Democrat John Fetterman of Pennsylvania voted against it, aligning with the opposing majority. A similar resolution had previously been blocked in the House of Representatives.

At the heart of the debate is a fundamental question regarding constitutional powers: the American founding charter attributes the authority to declare war to Congress, and not to the president. However, over the decades, various occupants of the White House have interpreted authorizations for the use of military force abroad granted by Parliament in an increasingly expansive manner, launching operations that are effectively entirely new compared to the original mandates. In response to this trend, several members of Congress had introduced resolutions aimed at forcing President Donald Trump to seek legislative approval before any military action against Tehran. None of them, however, managed to pass.

The conflict framework

The war broke out last February 28, when the United States and Israel launched a large-scale military operation against Iran. On April 7, Trump had announced a mutual two-week ceasefire with Tehran, paving the way for a diplomatic attempt: on April 11, the two delegations met in Islamabad for several rounds of negotiations. Iran was represented by the Speaker of Parliament Mohammad Bagher Ghalibaf, while the United States was led by Vice President JD Vance.

The talks, however, did not produce any agreement on a long-term ceasefire due to differences deemed insurmountable by both sides. The situation then escalated on April 13, when the US Central Command (CENTCOM) announced the commencement of a naval blockade of Iran, preventing any vessel from entering or leaving the country’s ports.

Photo Elizabeth Kearns Defense.gov